List of Earth MRI focus areas with mineral system = Magmatic REE

Magmatic REE

Magmatic REE systems typically occur in continental rifts or along translithospheric structures. REE and other elements in mantle-derived ultrabasic, alkaline, and peralkaline (agpaitic) intrusions are enriched by fractionation and separation of immiscibile carbonatite melts ± saline hydrothermal liquids.

Color on map:

Deposit types

Name	Commodities	Critical minerals
Peralkaline syenite/ granite/rhyolite /alaskite/pegmatites	REE, Y, Zr, Hf, Nb, Ta, Be, U, Th, Cu	REE, Zr, Hf, Nb, Ta, Be, U, V, Te, fluorite
Carbonatite	REE, P, Y, Nb, Ba, Sr, U, Th, Cu	REE, Nb, Sc, U, Sr, Ba, P, Cu, Zr, magnetite, vermiculite, fluorite
Phosphate	REE, P	REE
Fluorspar	Fluorite	Fluorite, barite, Ti, Nb, Zr, REE, Sc, U, Be

References

Verplanck, P.L., Van Gosen, B.S., Seal, R.R., and McCafferty, A.E., 2014, A deposit model for carbonatite and peralkaline intrusion-related rare earth element deposits: U.S. Geological Survey Scientific Investigations Report 2010-5070-J, 58 p., accessed April 18, 2020, at https://doi.org/10.3133/sir20105070J.
Verplanck, P.L., Mariano, A.N., and Mariano, A., Jr., 2016, Rare earth elements in carbonatites, chap. 1 of Verplanck, P.L., and Hitzman, M.W., eds., Reviews in economic geology, volume 18--Rare earth and critical elements in ore deposits: Littleton, Colo., Society of Economic Geologists, Inc., p. 5-32.
Dostal, J., 2016, Rare metal deposits associated with alkaline/peralkaline igneous rocks, chap. 2 of Verplanck, P.L., and Hitzman, M.W., eds., Reviews in economic geology, volume 18--Rare earth and critical elements in ore deposits: Littleton, Colo., Society of Economic Geologists, Inc., p. 33-54.
Dostal, J., 2017, Rare earth element deposits of alkaline igneous rocks: Resources, v. 6, no. 3, article no. 34, 12 p., accessed March 30, 2021, at https://www.mdpi.com/2079-9276/6/3/34.
Wang, Z., Li, M.Y.H., Liu, Z.R.R., and Zhou, M.F., 2021, Scandium--Ore deposits, the pivotal role of magmatic enrichment and future exploration: Ore Geology Reviews, v. 128, article no. 103906, accessed April 12, 2021, at https://doi.org/10.1016/j.oregeorev.2020.103906.

Source: Hofstra, A.H., and Kreiner, D.C., 2020, Systems-Deposits-Commodities-Critical Minerals Table for the Earth Mapping Resources Initiative: U.S. Geological Survey Open-File Report 2020-1042, 24 p., https://doi.org/10.3133/ofr20201042.

List of Earth MRI focus areas with mineral system = Magmatic REE

68 focus areas match these criteria.

Focus area	Region	States	Mineral Systems	Deposit types	Commodities
Darby-Hogatza REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Kokrines-Hodzana REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; lead; molybdenum; silver; thorium; uranium; yttrium
Kuskokwim-White Mountains REE	Alaska	Alaska	Magmatic REE	Carbonatite	copper; gold; iron; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Northern Alaska Range REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Porcupine River REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; phosphate; thorium; uranium; yttrium
Southeastern Alaska REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; phosphate; thorium; uranium; yttrium
Western Alaska Range REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Yukon-Tanana REE	Alaska	Alaska	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Archean gneiss terranes	North Central	Iowa; Michigan; Minnesota; Nebraska; South Dakota; Wisconsin	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Elk Creek carbonatite	North Central	Nebraska	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; vermiculite; uranium; yttrium
Elk Creek region	North Central	Kansas; Nebraska	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; vermiculite; uranium; yttrium
Humboldt Granite	North Central	Michigan	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Neoarchean Greenstone Belts of Minnesota, North Dakota and South Dakota	North Central	Minnesota; North Dakota; South Dakota	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Northeast Iowa intrusive complex (NEIIC)	North Central	Iowa; Minnesota; Wisconsin	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Wausau Syenite Complex (WSC)	North Central	Wisconsin	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; yttrium
Wolf River Batholith	North Central	Wisconsin	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Catoctin Formation metavolcanics in Maryland	Northeast	Maryland	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Eastern Piedmont Devonian granitoids	Northeast	Maryland	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Litchfield syenite	Northeast	Maine	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Adel Mountain Volcanics	Northwest	Montana	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; thorium; uranium; yttrium
Bearpaw Mountains-Eagle Buttes	Northwest	Montana	Magmatic REE	Carbonatite; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; lead; magnetite; phosphorus; silver; thorium; uranium; vermiculite; yttrium
Castle stock	Northwest	Montana	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Crazy Mountain Volcanics	Northwest	Montana	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; iron; lead; silver; thorium; uranium; yttrium
Grass Range	Northwest	Montana	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Hall Mountain mineral district	Northwest	Idaho	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Highwood Mountains	Northwest	Montana	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Johnson Ranch-Gold Butte-Froze to Death Butte	Northwest	Montana	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Judith Mountains	Northwest	Montana	Magmatic REE	Carbonatite	copper; gold; magnetite; phosphorus; silver; thorium; uranium; vermiculite; yttrium
Lemhi Pass mineral district	Northwest	Idaho; Montana	Magmatic REE	Hybrid Th-REE-Fe veins and replacements	iron; thorium; yttrium
Little Belt Mountains	Northwest	Montana	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Midnite	Northwest	Washington	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Missouri Breaks diatremes	Northwest	Montana	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Moccasin Mountains	Northwest	Montana	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Sheep Creek-Mineral Hill	Northwest	Idaho; Montana	Magmatic REE	Carbonatite; Hybrid Th-REE-Fe veins and replacements	copper; iron; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Smoky Butte	Northwest	Montana	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Snowbird-Dry Creek	Northwest	Montana	Magmatic REE	Carbonatite; Fluorspar	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Spokane Mountain	Northwest	Washington	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Sweet Grass Hills	Northwest	Montana	Magmatic REE	Carbonatite; Fluorspar; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Bear Lodge District and Broader Region	Rocky Mountains	South Dakota; Wyoming	Magmatic REE	Carbonatite	gold; thorium; uranium
Centennial Cone Prospect	Rocky Mountains	Colorado	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; feldspar; mica; thorium; uranium; yttrium
Central Laramie Range	Rocky Mountains	Wyoming	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Medicine Bow Mountains	Rocky Mountains	Colorado; Wyoming	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Powderhorn District	Rocky Mountains	Colorado	Magmatic REE	Carbonatite; Fluorspar	copper; iron; lead; phosphorus; silver; thorium; vermiculite; uranium; yttrium
Rattlesnake Hills Alkali Intrusive Complex	Rocky Mountains	Wyoming	Magmatic REE	Carbonatite	copper; lead; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Sierra Madre	Rocky Mountains	Colorado; Wyoming	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; vermiculite; yttrium
Sweetwater Arch	Rocky Mountains	Wyoming	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Twin Cedars, Big Bertha, South Platte pegmatites	Rocky Mountains	Colorado	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; feldspar; quartz; thorium; uranium; yttrium
Wet Mountains	Rocky Mountains	Colorado	Magmatic REE	Carbonatite; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; phosphorus; thorium; vermiculite; uranium; yttrium
Granite Mountain syenite	South Central	Arkansas	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Kansas Lamproite	South Central	Kansas	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; mica; thorium; uranium; yttrium
Magnet Cove District- Potash Sulphur Springs	South Central	Arkansas	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Midwest Permian Ultramafic Dike District	South Central	Illinois; Indiana; Kentucky	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
Rison anomaly	South Central	Arkansas	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
New Mexico Tertiary alkaline rocks and REE veins	Southwest	New Mexico	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Gallinas Mountains Mining District	Southwest	New Mexico	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; iron; lead; silver; thorium; uranium
La Paz	Southwest	Arizona	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Lemitar Mountains Mining District	Southwest	New Mexico	Magmatic REE	Carbonatite	copper; lead; magnetite; phosphorus; silver; thorium; uranium; vermiculite
McDermitt Caldera	Southwest	Nevada; Oregon	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Mountain Pass	Southwest	California; Nevada	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; uranium; vermiculite
New Mexico Cambrian alkaline rocks and REE veins	Southwest	New Mexico	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; iron; lead; molybdenum; silver; thorium; uranium; yttrium
New Mexico carbonatites	Southwest	New Mexico	Magmatic REE	Carbonatite	copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium
New Mexico Proterozoic alkaline rocks and pegmatites	Southwest	New Mexico	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Pajarito Mountain	Southwest	New Mexico	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; iron; thorium; uranium; yttrium
Round Top	Southwest	Texas	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Texas Cretaceous intrusions	Southwest	Texas	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Texas-New Mexico alkaline belt	Southwest	New Mexico; Texas	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; gold; iron; lead; silver; thorium; uranium
Toiyabe Peaks	Southwest	Nevada	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium
Wind Mountain (Cornudas Mountains)	Southwest	New Mexico	Magmatic REE	Peralkaline syenite/granite/rhyolite/alaskite/pegmatites	copper; thorium; uranium; yttrium